Benchmark #3 Flashcards
Rock type of fossils
Sedimentary
What is relative age?
The age of an event or object in relation to other events or objects
How old is earth
4.6 billion
Mass extinction
Numbers of species become extinct in a very short time.
Cause of Cretaceous extinction
When a large object from space collided into earth
Adaptation
When a species over time a adapts to better survive its enviorment
Evolution
Species adapt over time
Limiting factors
Something that could not be let more of a species change the population
Natural selection
When a certain type survive better because of their better adaptations
Speciation
New species come from old by separation by a natural barrier
Species
Living things reproduce
Vestigial organs
A body part from earlier species can relate to new species
Overproduction
An organism has more children than will survive because of predators , food lack, deseise and natural causes.
Variation
Variation in different genes will cause offspring to look similar to one another but have different traits
Adaptation in natural selection
An organism with best adaptations will live longer a
